ShaneAO: an enhanced adaptive optics and IR imaging system for the Lick Observatory 3-meter telescope

摘要

The Lick Observatory 3-meter telescope has a history of serving as a testbed for innovative adaptive optics techniques.In 1996, it became one of the first astronomical observatories to employ laser guide star (LGS) adaptive optics as afacility instrument available to the astronomy community. Work on a second-generation LGS adaptive optics system,ShaneAO, is well underway, with plans to deploy on telescope in 2013. In this paper we discuss key design features andimplementation plans for the ShaneAO adaptive optics system. Once again, the Shane 3-m will host a number of newtechniques and technologies vital to the development of future adaptive optics systems on larger telescopes. Included is awoofer-tweeter based wavefront correction system incorporating a voice-coil actuated, low spatial and temporalbandwidth, high stroke deformable mirror in conjunction with a high order, high bandwidth MEMs deformable mirror.The existing dye laser, in operation since 1996, will be replaced with a fiber laser recently developed at LawrenceLivermore National Laboratories. The system will also incorporate a high-sensitivity, high bandwidth wavefront sensorcamera. Enhanced IR performance will be achieved by replacing the existing PICNIC infrared array with an Hawaii2RG. The updated ShaneAO system will provide opportunities to test predictive control algorithms for adaptive optics.Capabilities for astronomical spectroscopy, polarimetry, and visible-light adaptive optical astronomy will be supported.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.